Orbital/Spin angular momentum + magnetic quantum numbers

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SUMMARY

The discussion focuses on determining the orbital and spin angular momentum quantum numbers, as well as the associated magnetic quantum numbers for an electron in a 4f1 excited state. The orbital angular momentum quantum number (l) is established as 3, corresponding to the "f" subshell. The principal quantum number (n) is identified as 4, while the spin quantum number (s) is consistently 1/2. The magnetic quantum numbers (m_l and m_s) are also explored, with m_l ranging from -3 to +3 and m_s being ±1/2.

PREREQUISITES
  • Understanding of quantum numbers, specifically orbital (l), principal (n), and spin (s) quantum numbers.
  • Familiarity with the electron configuration of atoms, particularly for excited states.
  • Knowledge of the significance of subshells, such as "f" in the context of angular momentum.
  • Basic grasp of magnetic quantum numbers (m_l and m_s) and their possible values.
NEXT STEPS
  • Study the implications of quantum numbers in atomic structure and electron configurations.
  • Learn about the rules governing the filling of electron subshells, including Hund's rule and the Pauli exclusion principle.
  • Explore the concept of angular momentum in quantum mechanics, focusing on its mathematical representation.
  • Investigate the significance of excited states in atomic physics and their impact on spectral lines.
USEFUL FOR

Students of quantum mechanics, physicists focusing on atomic structure, and educators teaching advanced chemistry or physics concepts related to electron configurations and quantum numbers.

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Homework Statement


A single electron atom has the outer electron in a 4f1 excited state. Write down the orbital and spin angular momentum quantum numbers and the associated magnetic quantum numbers for this state.

Homework Equations


I don't think there is any relevant equations. I think it comes purely from the fact it's in a 4f1 excited state.

The Attempt at a Solution


I originally thought it was l=3 for the orbital angular momentum quantum number, as I read that's what it is for "f". However, I am thrown off by the fact it's 4f1.

Thank you.
 
Physics news on Phys.org
The subscript "1" should be the ## J ## value, but ## J=1 ## is not possible. I believe the 4 is the principal quantum number ## n ##. Meanwhile you can always say ## s=1/2 ##. They are also asking what values ## m_l ## and ## m_s ## can have.
 

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